Port can now be specified for a Xen server.
Dependencies versions fixed.
Remove useless log.
Meaningful message when the web server cannot start listening.
Merge branch 'next-release'
Merge branch 'next-release'
Merge branch 'next-release'
Merge branch 'next-release'
Merge branch 'next-release'
Merge branch 'next-release'
3.4.0
Merge branch 'master' into next-release